文献类型：期刊文献

英文题名：Performance Study on Preparation of Mine Backfill Materials Using Industrial Solid Waste in Combination with Construction Waste

作者：Cai, Yang Liu, Qiumei Wu, Fufei Dong, Shuangkuai Zhang, Qiuyue Wang, Jing Luo, Pengfei Yang, Xin

第一作者：Cai, Yang

通信作者：Wu, FF[1];Liu, QM[2]

机构：[1]Guizhou Normal Univ, Sch Mat & Architectural Engn, Guiyang 550025, Peoples R China;[2]Guizhou Inst Technol, Sch Civil Engn, Guiyang 550025, Peoples R China

第一机构：Guizhou Normal Univ, Sch Mat & Architectural Engn, Guiyang 550025, Peoples R China

通信机构：corresponding author), Guizhou Normal Univ, Sch Mat & Architectural Engn, Guiyang 550025, Peoples R China;corresponding author), Guizhou Inst Technol, Sch Civil Engn, Guiyang 550025, Peoples R China.|贵州理工学院土木工程学院;贵州理工学院;

年份：2025

卷号：18

期号：15

外文期刊名：MATERIALS

收录：;EI(收录号：20253318992932);Scopus(收录号：2-s2.0-105013128211);WOS:【SCI-EXPANDED(收录号:WOS:001549477500001)】；

基金：This research was supported by the Guizhou Provincial Basic Research Program (Natural Science) (ZK [2023] 264). The authors are extremely grateful to the support of the School of Materials and Architectural Engineering, Guizhou Normal University.

语种：英文

外文关键词：ecological restoration; recycled aggregate; resource utilization; constitutive model; composite-activated cementitious material

摘要：The resource utilization of construction waste and industrial solid waste is a crucial aspect in promoting global urbanization and sustainable development. This study focuses on the preparation of mine backfill materials using construction waste in combination with various industrial solid wastes-ground granulated blast furnace slag (GGBFS), fly ash (FA), silica fume (SF), phosphorus slag (PS), fly ash-phosphorus slag-phosphogypsum composite (FA-PS-PG), and fly ash-phosphorus slag-beta-phosphogypsum composite (FA-PS-beta PG)-under different substitution rates (50%, 55%, 60%) as control parameters. A total of 19 mix proportions were investigated, evaluating their slump, dry density, compressive strength, uniaxial compressive stress-strain relationship, micromorphology, and phase composition. The results indicate that, compared to backfill materials prepared with pure cement, the incorporation of industrial solid wastes improves the fluidity of the backfill materials. At 56 days, the constitutive model parameter a increased to varying degrees, while parameter b decreased, indicating enhanced ductility. The compressive strength was consistently higher with PS at all substitution rates. The FA-PS-PG mixture with a 50% substitution rate achieved the highest 56-day compressive strength of 8.02 MPa. These findings can facilitate the application of construction waste and industrial solid waste in mine backfilling projects, delivering economic, environmental, and resource-related benefits.